Cuvette



FIG. 1 is a front, left, top perspective view of a cuvette showing mynew design;

FIG. 2 is a front side view thereof;

FIG. 3 is a rear side view thereof;

FIG. 4 is a top side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a right side view thereof.

The ornamental design for a cuvette, as shown and described.